diff --git a/netlify.toml b/netlify.toml
index bdb0c203..e9c7af0f 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -6,4 +6,6 @@ composer test && \
   composer run production
 """
 publish = "output_prod"
-environment = { PHP_VERSION = "7.2" }
+
+[build.environment]
+PHP_VERSION = "7.2"